Add AuthScheme to the SerivceClientConfiguration

[sugmanue]

Motivation and Context

This change exposes the map of AuthSchemes configured in the client using the SdkServiceClientConfiguration class.

Modifications

Testing

Screenshots (if appropriate)

Types of changes

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)

Checklist

• I have read the CONTRIBUTING document
• Local run of mvn install succeeds
• My code follows the code style of this project
• My change requires a change to the Javadoc documentation
• I have updated the Javadoc documentation accordingly
• I have added tests to cover my changes
• All new and existing tests passed
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• My change is to implement 1.11 parity feature and I have updated LaunchChangelog

License

• I confirm that this pull request can be released under the Apache 2 license

[sonarqubecloud]

SonarCloud Quality Gate failed.   

9 Bugs
0 Vulnerabilities
2 Security Hotspots
478 Code Smells

85.0% Coverage
4.2% Duplication

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[gosar]

I may be misremembering, but weren't we saying this should be on the SdkServiceClientConfiguration since it is generic and not aws-specific?

[sugmanue]

Good catch, I opened #4580 to fix this and other issues. Thanks!